CN111895479A

CN111895479A - Multifunctional electric heater

Info

Publication number: CN111895479A
Application number: CN202010865400.4A
Authority: CN
Inventors: 冯杰慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-06

Abstract

The invention provides a multifunctional electric heater, which comprises a first shell, a fan, a piston, a telescopic assembly and a heating assembly, wherein a first cavity and a second cavity are arranged in the first shell, the bottom of the side wall of the first cavity is communicated with the bottom of the side wall of the second cavity, the top of the side wall of the first cavity is communicated with the top of the side wall of the second cavity, which is far away from the first cavity, is provided with an air inlet, the top of the side wall of the first cavity, which is far away from the second cavity, is provided with an air outlet, the fan is installed in the air inlet, the piston is connected with the side wall of the second cavity in a sliding and sealing manner, the telescopic assembly is installed in the second cavity, one end of the telescopic assembly is fixedly connected with the piston, the telescopic assembly is used. The invention has the functions of air humidification and air heating, and can humidify or heat indoor air as required.

Description

Multifunctional electric heater

Technical Field

The invention relates to the field of electric heaters, in particular to a multifunctional electric heater.

Background

The electric heater is a device for converting electric energy into heat energy, has the advantages of cleanness, sanitation, no pollution, high heat efficiency and convenience in temperature control and regulation compared with the heating of the original traditional fuel, and is widely applied to daily life at present.

Through a large amount of prior art that retrieve discovery some representatives, like application number 201810006219.0's patent discloses a heater with purify, disinfect, humidification function, which comprises a housin, from up having set gradually crossflow fan, purification and disinfection storehouse, going up heat insulating board and electric heating device flow equalize down in the casing, form vertical passageway between the front side in purification and disinfection storehouse and the preceding inner wall of casing, follow supreme ultraviolet tube that has set gradually down in the purification and disinfection storehouse, flow equalize aviation baffle and purification net down, the top of casing is provided with out the air net, and its realization can air-purifying, get rid of formaldehyde, the purpose of disinfection and humidity regulation when the heating. Still disclose a light portable intelligent humidification electric heat room heater as application number 200610045787.9, including the electric heater frame, heat and spout vapour device, restraint filamentous carbon fiber heating element, ventilative decorative cloth, the power wire, the temperature controller, the time controller, earth-leakage protector formula switch, the power gets into restraint filamentous carbon fiber heating element through second time controller and temperature controller behind the switch and can regularly control the temperature and produce the heat, humidification vapour device is when the ration increases indoor air humidity according to indoor air drying degree by first time controller accuse. Still like application number 201610106609.6 discloses an electric heating medium room heater of taking humidification function certainly, and it has the humidification function, can realize heating while moisturizing.

For the electric heater, the electric heater has the functions of air humidification and air heating, and then the structure of the electric heater is complex and needs to be further improved.

Disclosure of Invention

In order to solve the problem that the existing electric heater with the humidifying and heating functions is complex in structure, the invention provides an electric heater, which has the following specific technical scheme:

the utility model provides a multifunctional electric heater, includes first shell and fan, be equipped with first cavity and second cavity in the first shell, the lateral wall bottom of first cavity with the lateral wall bottom intercommunication of second cavity, the lateral wall top of first cavity with the lateral wall top intercommunication of second cavity, the top of the lateral wall that first cavity was kept away from to the second cavity is equipped with the air intake, the top that the lateral wall of second cavity was kept away from to first cavity is equipped with the air outlet, the fan is installed in the air intake.

The multifunctional electric heater further comprises a piston, a telescopic assembly and a heating assembly, the piston is connected with the side wall of the second cavity in a sliding and sealing mode, the telescopic assembly is installed in the second cavity, one end of the telescopic assembly is fixedly connected with the piston, the telescopic assembly is used for driving the piston to slide along the side wall of the second cavity, and the heating assembly is installed in the first cavity.

And injecting a certain amount of tap water into the first chamber through the air outlet and immersing the heating component at the bottom of the first chamber. Steam may be generated by controlling the operation of the heating assembly to boil tap water in the first chamber. The fan works, indoor airflow flows into the first chamber after entering from the air inlet, and then water vapor in the first chamber is pumped back to the room from the air outlet. At this time, the multifunctional electric heater may be used as a humidifier to perform a humidifying operation on indoor air.

When the room air is heated and warmed, the telescopic assembly is controlled to act, the piston is driven to move towards the top wall of the second chamber, and tap water in the first chamber is pumped to the second chamber. The heating assembly is disengaged from the tap water. By controlling the heating group and the fan to work simultaneously, the heating assembly heats the air in the first chamber. Indoor air current flows into the first chamber after entering from the air inlet, and then heat generated by the heating assembly in the first chamber is pumped back into the room from the air outlet. At this time, the multifunctional electric heater can be used as a heater to perform heating operation on indoor air.

The multifunctional electric heater has the functions of air humidification and air heating, and can humidify or heat indoor air as required. The piston type telescopic heating device only comprises the components such as the piston, the telescopic assembly, the heating assembly and the like, is ingenious in conception and simple in integral structure, and can be conveniently installed and maintained subsequently.

Optionally, the multifunctional electric heater further comprises a flow guide plate.

Optionally, the air deflector is installed between the air outlet and the top of the sidewall of the first chamber, which is close to the second chamber.

Optionally, the upper surface of the top wall of the guide plate close to the first chamber is in an arc bending shape, and the lower surface of the top wall of the guide plate far from the first chamber is in a horizontal shape.

Optionally, the height of the upper surface of the flow guide plate increases progressively from the end far away from the air outlet to the end close to the air outlet.

Optionally, a plurality of vertical flow guide holes are formed between the upper surface and the lower surface of the flow guide plate.

Optionally, the first chamber and the second chamber are separated by a partition.

According to the Bernoulli principle, when the fan rotates, the airflow flows through the guide plate, the airflow speed above the guide plate is higher than that when the guide plate is not arranged, the air pressure is lower, and the air pressure difference between the upper surface and the lower surface of the guide plate is higher, so that water vapor or heat in the first chamber flows to the upper surface of the guide plate through the guide holes and then flows back to the inside of the chamber through the air outlet. Through setting up the guide plate, can be better faster carry to indoor with vapor or heat in the first cavity, improve the electric heater and to the indoor air humidification or heat heating efficiency.

Optionally, the spacer is made of an insulating ceramic material. The partition board is made of insulating ceramic materials and can play a role in heat insulation. When the electric heater heats the indoor air, the partition plate can separate heat generated by the heating assembly, and the sealing performance between the piston and the side wall of the second chamber due to high temperature is avoided.

Optionally, the housing is made of an insulating ceramic material. The shell is made of insulating ceramic materials, the burning of the outer wall of the electric heater can be avoided, a user can conveniently adjust the position of the electric heater through the outer wall of the electric heater,

optionally, the heating assembly is an electric heating tube, and the electric heating tube is mounted on the side wall of the first chamber close to the second chamber.

The beneficial effects obtained by the invention are as follows: the multifunctional electric heater has the functions of air humidification and air heating, and can humidify or heat indoor air as required. The piston type telescopic heating device only comprises the components such as the piston, the telescopic assembly, the heating assembly and the like, is ingenious in conception and simple in integral structure, and can be conveniently installed and maintained subsequently.

Drawings

The present invention will be further understood from the following description taken in conjunction with the accompanying drawings, the emphasis instead being placed upon illustrating the principles of the embodiments.

FIG. 1 is a first schematic view showing an overall structure of an electric heater according to an embodiment of the present invention;

FIG. 2 is a second schematic view showing an overall structure of an electric heater according to an embodiment of the present invention;

FIG. 3 is a third schematic view showing an overall structure of an electric heater according to an embodiment of the present invention;

FIG. 4 is a fourth schematic view showing an overall structure of an electric heater according to an embodiment of the present invention;

FIG. 5 is a fifth schematic view showing an overall structure of an electric heater according to an embodiment of the present invention.

Description of reference numerals:

1. a first housing; 2. a first chamber; 3. a second chamber; 4. an air inlet; 5. an air outlet; 6. a piston; 7. a telescoping assembly; 8. a heating assembly; 9. a fan; 10. a temperature sensor; 11. a baffle; 12. a flow guide hole; 13. a first memory spring; 14. a second housing; 15. a push rod; 16. a third chamber; 17. a piston rod; 18. a hydraulic cylinder sleeve; 19. a second memory spring; 20. a thermally conductive mesh.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.

The present invention is an electric heater, and the following embodiments are explained according to the attached drawings:

the first embodiment is as follows:

as shown in fig. 1, a multifunctional electric heater comprises a first housing 1 and a fan 9, wherein a first cavity 2 and a second cavity 3 are arranged in the first housing 1, the bottom of the side wall of the first cavity 2 is communicated with the bottom of the side wall of the second cavity 3, the top of the side wall of the first cavity 2 is communicated with the top of the side wall of the second cavity 3, an air inlet 4 is arranged at the top of the side wall of the second cavity 3 far away from the first cavity 2, an air outlet 5 is arranged at the top of the side wall of the first cavity 2 far away from the second cavity 3, and the fan 9 is installed in the air inlet 4.

As shown in fig. 1, the multifunctional electric heater further includes a piston 6, a telescopic assembly 7 and a heating assembly 8, the piston 6 is connected with the side wall of the second chamber 3 in a sliding and sealing manner, the telescopic assembly 7 is installed in the second chamber 3, one end of the telescopic assembly 7 is fixedly connected with the piston 6, the telescopic assembly 7 is used for driving the piston 6 to slide along the side wall of the second chamber 3, and the heating assembly 8 is installed in the first chamber 2.

A certain amount of tap water is injected into the first chamber 2 through the air outlet 5 and the heating element 8 located at the bottom of the first chamber 2 is immersed. Steam may be generated by controlling the operation of the heating assembly 8 to boil tap water in the first chamber 2. The fan 9 is operated to make the indoor air flow into the first chamber 2 after entering from the air inlet 4, and then the water vapor in the first chamber 2 is pumped back into the room from the air outlet 5. At this time, the multifunctional electric heater may be used as a humidifier to perform a humidifying operation on indoor air.

The telescopic assembly 7 is used for driving the piston 6 to slide back and forth along the inner side wall of the second chamber 3, and is an electric push rod. The retraction assembly 7 may be mounted between the top of the second chamber 3 and the piston 6, or between the bottom of the second chamber 3 and the piston 6. The detailed structure of the telescopic assembly 7 is not described herein since it is conventional for those skilled in the art.

When the room air is heated and warmed, the telescopic assembly 7 is controlled to act, the piston 6 is driven to move towards the top wall of the second chamber 3, and the tap water in the first chamber 2 is partially or completely pumped to the second chamber 3. The heating element 8 is detached from the tap water. By controlling the heating group and the fan 9 to work simultaneously, the heating assembly 8 will heat the air in the first chamber 2. After entering from the air inlet 4, the indoor air flow flows into the first chamber 2, and then the heat generated by the heating assembly 8 in the first chamber 2 is pumped back into the room from the air outlet 5. At this time, the multifunctional electric heater can be used as a heater to perform heating operation on indoor air.

The multifunctional electric heater has the functions of air humidification and air heating, and can humidify or heat indoor air as required. The telescopic piston type air conditioner only comprises the piston 6, the telescopic assembly 7, the heating assembly 8 and other components, is ingenious in conception and simple in overall structure, and can be conveniently installed and maintained subsequently.

The heating assembly 8 is an electric heating tube, and is installed at the bottom of the side wall of the first chamber 2 near the second chamber 3. Thus, a small amount of water is injected into the first chamber 2, so that the electric heating tube can be immersed to heat the water in the first chamber 2 to generate steam, thereby humidifying the indoor air.

As shown in fig. 2, the multifunctional electric heater further includes a guide plate 11, the guide plate 11 is installed between the air outlet 5 and the top of the sidewall of the first chamber 2 close to the second chamber 3, the upper surface of the top wall of the guide plate 11 close to the first chamber 2 is in a circular arc curved shape, the lower surface of the top wall of the guide plate 11 far away from the first chamber 2 is in a horizontal shape, the height of the upper surface of the guide plate 11 is gradually increased from one end far away from the air outlet 5 to one end close to the air outlet 5, and a plurality of vertical guide holes 12 are formed between the upper surface and the lower surface of the guide plate 11.

According to the bernoulli principle, when the fan 9 rotates, the airflow flows through the air deflector 11, the airflow speed above the air deflector 11 is faster than that when the air deflector 11 is not arranged, the air pressure is lower, and the air pressure difference between the upper surface and the lower surface of the air deflector 11 is larger, so that the water vapor or heat in the first chamber 2 flows to the upper surface of the air deflector 11 through the air deflector holes 12 and then flows back to the chamber through the air outlet 5. Through setting up guide plate 11, can be better faster carry to the room with vapor or heat in the first chamber 2, improve the electric heater and to the room air humidification or heat heating efficiency.

The first chamber 2 is separated from the second chamber 3 by a partition, which is made of an insulating ceramic material. The partition board is made of insulating ceramic materials and can play a role in heat insulation. When the electric heater is used for heating indoor air, the partition plate can separate heat generated by the heating assembly 8, so that the piston 6 is prevented from sealing with the side wall of the second chamber 3 due to high temperature.

The housing is made of an insulating ceramic material. The shell is made of insulating ceramic materials, the burning of the outer wall of the electric heater can be avoided, a user can conveniently adjust the position of the electric heater through the outer wall of the electric heater,

the electric heater also includes a temperature sensor 10 and a processor. The temperature sensor 10 is installed on the surface of the partition board close to the electrothermal tube and is positioned in the first chamber 2. The processor is electrically connected with the fan 9, the temperature sensor 10 and the electric heating tube respectively.

The processor is used for controlling the telescopic assembly 7 to act to adjust the position of the piston 6 according to the needs of users, and switching the functions of the electric heater to enable the electric heater to be in an air humidifying or heating working state. In addition, the temperature sensor 10 is used for detecting the temperature of the first chamber 2, and when the temperature of the first chamber 2 is higher than a preset temperature value, the power supply of the heating assembly 8 is cut off, so as to prevent the electric heater from causing a fire due to high temperature.

Example two:

The volume of the second chamber 3 is larger than the first chamber 2. As a preferred solution, the volume of the second chamber 3 is at least twice the volume of the first chamber 2. In this way, by controlling the movement of the piston 6 towards the top wall of the second chamber 3, the water in the first chamber 2 can be better extracted into the second chamber 3.

Example three:

As shown in fig. 3, the electric heater further comprises a temperature limiting assembly, wherein the temperature limiting assembly comprises a first memory spring 13, a second shell 14, a push rod 15, a piston rod 17 and a hydraulic cylinder sleeve 18 with a telescopic structure formed by sleeving at least two stages of layers together in a laminated manner. The first memory spring 13 has a two-way memory effect, a deformation temperature is greater than 100 degrees and less than 300 degrees, the first memory spring is in a free state when the deformation temperature is less than the deformation temperature, the first memory spring is in an extension state when the deformation temperature is greater than the deformation temperature, and one end of the first memory spring 13 is in contact with an insulating layer of the electric heating tube or a heating tube part of the electric heating tube. A third chamber 16 is arranged in the second housing 14, the second housing 14 penetrates through a partition plate, the outer side wall of the second housing is connected with the partition plate in a sealing manner, one part of the third chamber 16 is positioned in the first chamber 2, the other part of the third chamber 16 is positioned in the second chamber 3, the push rod 15 is positioned in the first chamber 2, one end of the push rod 15 penetrates through the side wall of the third chamber 16 and then extends into the third chamber 16, one end of the push rod 15 is connected with the side wall of the third chamber 16 in a sliding and sealing manner, and the other end of the push rod 15 is fixedly connected with the other end of the first memory spring 13. One end of the piston rod 17 is located in the hydraulic cylinder sleeve 18 at the innermost layer and is in sliding sealing connection with the inner wall of the hydraulic cylinder sleeve 18 at the innermost layer, the hydraulic cylinder sleeve 18 at the outermost layer is in sealing connection with the side wall of the third chamber 16, the hydraulic cylinder sleeve 18 is communicated with the third chamber 16, a sealing chamber is formed among the piston rod 17, the hydraulic cylinder sleeve 18, the third chamber 16 and the push rod 15, and lubricating grease is filled in the sealing chamber.

When the temperature of the first memory spring 13 is higher than the deformation temperature, the first memory spring 13 extends to drive the push rod 15 to move towards the third chamber 16. Meanwhile, the liquid in the third chamber 16 drives the cylinder sleeve 18 and the piston rod 17 to extend, so that the piston 6 moves towards the bottom of the second chamber 3, and the water in the second chamber 3 flows back to the first chamber 2 again, so as to cool the electrothermal tube and the first chamber 2, thereby avoiding accidents such as fire caused by high temperature of the electrothermal tube. Meanwhile, the temperature limiting assembly performs high-temperature protection on the electric heater in a mechanical mode, and performs high-temperature protection matching on the electric heater in an electrical control mode with the temperature sensor 10 and the processor, so that double protection can be performed on the electric heater, and the safety performance of the electric heater is better.

In this embodiment, the telescopic member is located between the second housing 14 and the telescopic assembly 7, that is, one end of the telescopic assembly 7 is fixedly connected to the piston 6, and the other end is fixedly connected to the piston rod 17.

Example four:

As shown in fig. 4, in order to ensure that the electric heating tube is lowered from a high temperature state to a normal operation state, the piston rod 17 and the hydraulic cylinder sleeve 18 can be restored to the original positions so as to drive the piston 6 to slide along the side wall of the second chamber 3 through the telescopic assembly 7 and be connected in a sealing manner, so as to pump the water in the first chamber 2 into the second chamber 3 or return the water in the second chamber 3 to the first chamber 2, the electric heating tube further comprises a second memory spring 19, the second memory spring 19 is installed in the third chamber 16, one end of the second memory spring is fixedly connected with the side wall of the third chamber 16, and the other end of the second memory spring is fixedly connected with one end of the piston rod 17 extending into the third chamber 16. The second memory spring 19 has a two-way memory effect, and has a deformation temperature of more than 100 degrees and less than 300 degrees, a free state when the deformation temperature is lower than the deformation temperature, and an extended state when the deformation temperature is higher than the deformation temperature.

In this example, the portion of the second casing 14 located in the second chamber 3 is made of an insulating material, and the portion of the second casing 14 located in the first chamber 2 is made of an aluminum alloy material having good thermal conductivity. In this way, the lubricating grease in the third chamber 16 can better sense the temperature of the first chamber 2 and change through the second housing 14, and meanwhile, the second housing 14 and the partition plate can cut off the temperature transmission of the first chamber 2, so that the temperature of the second chamber 3 is prevented from sharply rising to influence the sealing performance between the piston 6 and the side wall of the second chamber 3 while the expansion and contraction of the hydraulic cylinder sleeve 181 and the telescopic rod are controlled.

A second memory spring 19 is arranged between the piston rod 17 and the inner wall of the third chamber 16, when the temperature of the first chamber 2 is higher than the preset temperature, and the first memory spring 13 is heated to deform and extend, the second memory spring 19 is heated to deform and extend along with the first memory spring, the push rod 15 drives the hydraulic cylinder sleeve 18 and the piston rod 17 to extend through lubricating grease, and the piston 6 can move towards the bottom of the second chamber 3. When the temperature of the first chamber 2 is reduced to be less than the preset temperature, the first memory spring 13 is deformed and shortened, and the second memory spring 19 is deformed and shortened accordingly, so that the hydraulic cylinder sleeve 18 and the piston rod 17 can be restored to the original positions. Compared with the common spring, the piston rod 17 and the hydraulic cylinder sleeve 18 can be better driven to extend and contract by utilizing the characteristic that the second memory spring 19 is heated and deformed to extend.

In this example, the diameter of the push rod 15 is larger than the inner diameter of the piston rod 17 and the outermost cylinder sleeve 18. As a preferred solution, the diameter of the push rod 15 is at least twice the inner diameter of the outermost cylinder sleeve 18. In this way, the sensitivity of the temperature limiting assembly can be increased, so that when the first memory spring 13 is extended or shortened, the piston rod 17 and the cylinder sleeve 18 can be rapidly extended or shortened to control the position of the piston 6.

Example five:

Since the grease in the third chamber 16 is a poor thermal conductor, the temperature of the grease in the portion of the third chamber 16 located in the first chamber 2 rises faster than the temperature of the grease in the portion of the third chamber 16 located in the second chamber 3 when the first chamber 2 and the push rod 15 rise in temperature. When the first chamber 2 and the push rod 15 are cooled down, the temperature of the grease in the portion of the third chamber 16 located in the first chamber 2 is cooled down faster than the temperature of the grease in the portion of the third chamber 16 located in the second chamber 3. That is, the temperature of the grease on both sides of the third chamber 16 is not equal in most cases, for example, when the temperature of the grease in each point in the third chamber 16 is restored to room temperature and the electrothermal tube starts to operate to heat the indoor air, the temperature of the grease on the side of the first chamber 2 is higher than that of the grease on the side of the second chamber 3. When the heating of the indoor air is finished and the electric heater starts to humidify the indoor air, the temperature of the grease in the first chamber 2 may be rapidly decreased to about 100 degrees, and the temperature of the grease in the second chamber 3 may be still higher than 100 degrees or even higher than 200 degrees. In this way, due to the temperature difference between the grease on the two sides of the third chamber 16, the second memory spring 19 cannot move synchronously with the first memory spring 13, i.e. the electric heater cannot be switched back and forth between the air humidifying function and the air heating function.

In order to solve the above problem, in the present embodiment, as shown in fig. 5, the electric heater further includes a plurality of layers of heat conductive nets 20 parallel to each other, the heat conductive nets 20 may be made of an aluminum alloy material, and are installed in the third chamber 16 and connected to both side walls of the third chamber 16, and the first memory spring 13 and the push rod 15 pass through the heat conductive nets 20 and are movably disposed with the heat conductive nets. So, through heat conduction net 20, can be so that the temperature of the lubricated grease of third chamber 16 both sides equals for the electric heater can be quick switch back and forth in two kinds of functions of air humidifying and air heating.

In the above embodiment, the dimensions of the telescopic assembly 7, the telescopic component, the piston 6, the first housing 1, the push rod 15, the second housing 14, and other components may be selected according to actual situations, and are not described herein again.

Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples, and various configurations may omit, replace, or add various processes or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many of the elements are examples and do not limit the scope of the disclosure or claims.

Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, such as well-known circuits, processes, algorithms, structures, and techniques, which have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.

Claims

1. A multifunctional electric heater comprises a first shell and a fan, wherein a first cavity and a second cavity are arranged in the first shell, the bottom of the side wall of the first cavity is communicated with the bottom of the side wall of the second cavity, the top of the side wall of the first cavity is communicated with the top of the side wall of the second cavity, which is far away from the first cavity, is provided with an air inlet, the top of the side wall of the first cavity, which is far away from the second cavity, is provided with an air outlet, and the fan is installed in the air inlet, the multifunctional electric heater is characterized by further comprising a piston, a telescopic assembly and a heating assembly, the piston is connected with the side wall of the second cavity in a sliding and sealing manner, the telescopic assembly is installed in the second cavity, one end of the telescopic assembly is fixedly connected with the piston, and the telescopic assembly is used for driving the piston, the heating assembly is mounted in the first chamber.

2. The multi-function electric heater of claim 1, further comprising a baffle.

3. A multi-function electric heater as claimed in any preceding claim, wherein the baffle is mounted between the outlet and the top of the side wall of the first chamber adjacent the second chamber.

4. A multi-function electric heater as claimed in any preceding claim, wherein the upper surface of the baffle adjacent the top wall of the first chamber is curved in a circular arc and the lower surface of the baffle remote from the top wall of the first chamber is horizontal.

5. A multi-function electric heater as claimed in any preceding claim, wherein the height of the upper surface of the baffle increases from the end remote from the outlet to the end adjacent the outlet.

6. A multi-function electric heater as claimed in any preceding claim, wherein a plurality of vertical baffle holes are provided between the upper and lower surfaces of the baffle.

7. A multi-function electric heater as claimed in any preceding claim, wherein the first and second chambers are separated by a partition.

8. A multi-function electric heater as claimed in any preceding claim, wherein the separator is made of an insulating ceramic material.

9. A multi-function electric heater as claimed in any preceding claim, wherein the housing is formed from an insulating ceramic material.

10. A multi-function electric heater as claimed in any preceding claim, wherein the heating element is an electrical heater mounted on the side wall of the first chamber adjacent the second chamber.